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5990 COMPACTED FILL 5980 1� CUTOFF TRENCH 5970 I 0+00 10 +00 �7CUIIYIGIV 1 rv��v r�r►�� 0 20 40 80 120 SCALE IN FEET - GRASS - STABILIZED EMBANKMENT SLOPES 2H: 1V GRASS - STABILIZED EMBANKMENT CREST 1-FT DIA. ROCK SIZE RIP GROUTED INTO PLACE RAP = j � N1 I I 1% MIN. GRADE ---- - - - - -- - -- ~- - _ I I I I I >f t 1.5'- 2' i N 211: 1V DOWNSTREAM TOE PLAN 2H:1V GRASS - STABILIZED EMBANKMENT SLOPE - - SEDIMENT \ \\ 2 °f POND SPILLWAY 2H: 1 V UPSTREAM TOE DOWNSTREAM SEDIMENT POND EMBANKMENT SLOPE -` ELBOW AS \ NECESSARY GATE VALVE IN FIELD 1r% SEDIMENT POND SPILLWAY r1' DRY FREEBOARD 1' DESIGN WATER LEVEL CREST ELEVATION 5982' N - - - - - UPSTREAM INVERT AT EL. 5980', VARIES i 4 DOWNSTREAM AT 1% ��- COMPACTED ALL 2 r r "r 2 1 MINIMUM GRADE EMBANKMENT 3' - 9" FILTER MATERIAL WITH THE FOLLOWING GRADATION: D85 = 0.4" -12" RIPRAP SLOPE PROTECTION WITH THE FOLLOWING GRADATION: D50= 0'2" D10o 12" D15 = 0.1 SECTION D50= 9" D10 = 2" SEDIMENT POND SPILLWAY DETAILS NTS -UPSTREAM SEDIMENT POND EMBANKMENT SLOPE - 4" MIN. g" I.D. STEEL PIPE 2 �1 1% GRADE 5' INLET EL. 5975' I CUTOFF COLLARS SPACED AT 5' INTERVALS, EXTENDING A MINIMUM OF 4" ABOVE O.D. OF OUTLET PIPE OUTLET PIPE DETAIL v NTS COAL WASTE 2% 2% �C FILL WITH SELECT NATURAL 2 GRAVEL MATERIAL GROUND I UNDERDRAIN DETAIL C NTS ROCK CUT SLOPE . RUNOFF , CONTROL DITCH , INSIDE SIDE SLOPES 1 �' IF ON HAUL ROAD 14X 2 0.3' MIN. DRY FREEBOARD SOIL CUT SLOPE DITCH GRADE (SEE X /TABLE THIS DRAWING) RIPRAP THICKNESS, R-/ 2 2 FILTER THICKNESS, T - RUNOFF CONTROL DITCH DETAIL (SEE RUNOFF CONTROL DITCH REQUIREMENTS ON THIS DRAWING) NTS C SEDIMENT POND CREST II OVERFLOW SPILLWAY 5990 PROJECTED TO SECTION) 9 e MAX. POOL LEVEL EL. 5979.7' w _ I 04 - T - - - -- -- - 2 - - - - - �"ORTGINAE-GROUND SURFACE - - - - -- - - -- -- - - - -- -- - -- - -- - - -- v - - - -- -- -- - -- -- -- - -- -- - -- - - - - 5980 zo ------- - - - -f- ---------------------------- - - - - -- < - - - - - -- - 7_7' MAX. - - - -- .. 3' MIN. EXCAVATED GROUND SURFACE a \ w J . w k--13' MIN. ✓� I I I I I 20 +00 30+00 40 +00 50 +00 60 +00 IEXISTING DRAINAGE BOTTOM EL. 5972' 5970 70 +00 80 +00 90 +00 100 +00 110 +00 120+00 130 +00 140 +00 150 +00 160 +00 170 +00 180+00 190 +00 200 +00 210+00 220 +00 230 +00 240 +00 250+00 SEDIMENT POND SECTION M M 0 5 10 20 30 SCALE IN FEET il RUNOFF CONTROL DITCH REQUIREMENTS (SEE NOTES BELOW) mil DITCH LOCATION Q FLOWRATE (CFS) DITCH RIPRAP GRADATION OUTLET INTAKE INVERT RIPRAP THICKNESS R FILTER THICKNESS T TOTAL CHANNEL DEPTH,X MAX 5990 D15 MAX CC. SEDIMENT POND CREST AT EL. 5975' MAXIMUM SEDIMENT 5990 6.57 10 20 8" I.D. STEEL OUTLET COMPACTED FILL I MAX. POOL LEVEL EL. 5979.7' LEVEL AT EL. 5974.8' 0.3 0.1 20 9 PIPE WITH GATE VALVE SEE 2% HAUL ROAD /TOE DITCH 9 2/3 15 10 4.6 2 0.9 PROJECTED TO SECTION ( )e 0.1 ORIGINAL GROUND 9 18 SIDE DITCH 6.57 36 35 CREST EL. 2 5982' SURFACE -------- ----- 2.2 � 0.1 ~ W 5980 HIGHWAY 133 18 1 �- = - - '- 5980 w 5.2 w 1 0.2 1% TYP. 3' MIN. - -- - - -'" 9 36 UPLAND DIVERSION 13.74 10 28 19 I fir/ _f - -- -- - 7.7' MAX. -- �1 2 1 0.3 z 28 z 18 CREST DITCH - -= -G ----- - - - - - - - - - NONE NONE 0 NONE 13.5 NONE I NONE NONE CUTOFF TRENC �3' MIN. 1 BOTTOM EL. 5972' COVER FILL UPLAND DIVERSION y 1 2 20 14 i 6.5 2 1 0.3 1 0.1 1 20 9 w 5970 SADDLE AS REQUIRED 5970 w w w RIP -RAP OR SIMILAR SLOPE PROTECTION 5960 5960 I I 0 +00 I I 10 +00 20 +00 I 30 +00 I I I 40 +00 50 +00 60 +00 I I I 70 +00 80+00 90 +00 I I I 100 +00 110 +00 120 +00 130 +00 SEDIMENT POND SECTION Q Q, u u 0 5 10 20 30 SCALE IN FEET NO DESCRIPTION APPRVD DATE NO DESCRIPTION BY CH JAPPRVD. DATE N�� 0 ISSUED DRAFT FOR REVIEW A.J.B. 11 95 0 z U ISSUED FINAL FOR PERMITTING A.J.B. 1/96 - O u00 w 1 REVISED AS PER DMG COMMENTS 5 31 96 A.J.B. 6 96 LU w m w fr w DITCH LOCATION Q FLOWRATE (CFS) ASSUMED GRADE ( %) RIPRAP GRADATION FILTER GRADATION RIPRAP THICKNESS R FILTER THICKNESS T TOTAL CHANNEL DEPTH,X MAX D50 D15 MAX D85 Dso D15 10% HAUL ROAD 6.57 10 20 14 6.5 3.5 1.3 0.3 0.1 20 9 12 2% HAUL ROAD /TOE DITCH 6.57 2/3 15 10 4.6 2 0.9 0.2 0.1 15 9 18 SIDE DITCH 6.57 36 35 24 11 6 2.2 0.4 0.1 35 9 18 TOE TO POND 12.88 2.7 17 12 5.2 2.4 1 0.2 0.1 17 9 36 UPLAND DIVERSION 13.74 10 28 19 9 5 1 1.9 1 0.3 0.1 28 9 18 CREST DITCH 3.13 1 2 NONE NONE NONE NONE 13.5 NONE I NONE NONE N/A N/A 18 COVER FILL UPLAND DIVERSION 26.80 1 2 20 14 i 6.5 1 1.3 1 0.3 1 0.1 1 20 9 24 NOTES IN RIPRAP AND FILTER MATERIAL SHOULD BE WELL GRADED 2) REQUIREMENTS BASED ON THE SURFACE MINING WATER DIVERSION DESIGN MANUAL ( OSM, 1982) . Pe nitNyymber$: G/. Class:4Pe"'t 3) TOTAL CHANNEL DEPTH INCLUDES A MINIMUM OF 0.3 FEET DRY FREEBOARD. s....... t/p� �� yyt� < <�� Class: O Revision 4) ALL DIMENSIONS ARE IN INCHES. I_ Typeiseq Class. 0 Report O Hydro OGenerel 5) DIVERSION DITCH ALIGNMENT AND CROSS SECTION MAY CHANGE TO SUIT FIELD CONDITIONS, Doc Type --------- ---------------------- AS APPROVED BY THE ENGINEER- oApPl. ❑Rana oEnfome o iospecl -- DESIGNED G . 12/95 DRAWN DBl 12/95 CHECKED A J.8 1/96 APPROVED APPROVED APPROVED oP1pO.HrrG�ST ti s.Ia�+cn F vO;.a EL�•�T11 o 1•` 15247 � 0• re - ENGINEER PREPARED FOR PREPARED BY; BOWIE RESOURCES, LIMITED *- W- EsTca&N 41 IN BOWIE NO. 2 MINE 5600 SOUTH QUEBEC ST, SUITE 307 -0 ENGLEWOOD, COEORADq Ijog i 01 Nilllefal8 a Ut k logy 1303E 290 -9113 ![Tt.E SCALE AS SHOWN REVISION COAL MINE WASTE BANK DESIGN DRAWING No SEDIMENT POND PLAN, 95266 -04 2 SECTIONS, AND DETAILS illlil full IiNI liiil Illli lilll IIII IIII